Some recently introduced concepts of multiple criteria decision making (MCDM), such as the range of compromise and its use in dimensionless weighting of the objectives, are employed to formulate machining recommendations under multiple machining criteria. Two approaches are presented and applied to the machining of 390 die cast aluminum alloy. The first is a graphical presentation of nondominated solutions from which an appropriate solution can be chosen under varying applications, requirements, and priorities. The second is the formulation of a composite function of the objectives through dimensionless weighting to select the optimum machining variables under given aspiration levels for the machining criteria.